Thanks. I have done very thorough testing but it should work well, I have just printed a steering nozzle and reverse bucket for it so will be testing it soon

Yes there seems to be a really great group of people into 3d printing and jet units and stuff which is awesome and they are so positive and helpful

I've found that (specifically) translucent PLA printed at 100% infill and a slightly higher nozzle temperature is incredibly strong, I'll have to do some comparisons.

Ok thanks! I have done some 100% prints that are super strong like dimple dies and used them in a hydraulic press to bend steels

That's pretty much how fiberglass composites work. The core is just there to hold the two fiberglass skins in place

What about the issue of waterproofing

What higher infill does help with is layer adhesion issues.

Yeah a lot of people say petg is better, thanks

Could you coat this in epoxy or would it eat into the pla?

polycarbonate, the good polymaker max stuff. Tho you might have to anneal it in home oven and compensate for any shrikage it causes to get higheset possible strength.

I've got a brushless Ryobi drill that's like new but burned out the ESC, so I'll probably use a high amp RC PWM ESC to control it. I think it will be perfect for this. I'm going to try and mount it to one of my kayaks.

That’s really cool ! I hope it works well let me know how it goes!

Haha I tried to do it so people can make it with minimal tools👍

O nice one! Do you have a video of it? Also how long did you run it ? Wondering how long the plastic will last

@@DktheWelder theres the first test vid in my library.on that test i usesd a 775 dewault motor,printed 2.5:1 gear reduction....it was loud and 3 mph. I didnt vid the 2nd motor test,it was a 250 watt scooter motor direct drive.stopped using it because it was 24v. At the time i couldnt swing the cash for a big brushless motor and batteries. The pump has been retired for awhile now. Petg will last awhile.my rudder setup been out in the sun for 4 years now,no issues. I didnt try in pla,i only used petg.

​@@nickpellegrinmy motor 500w from scooter is too hot about 3-4 min. Crusing On lake

Thanks that is good to know 👍

@@DktheWelder no worries I also have a 3D scan of the same jet ski impeler that you were holding and a 3D printable file for it. Let me know if you want a copy of it

@@jotham123 Yes please!

There are some free packs of files left if you want on the Facebook

I was actually thinking of doing that for my amphibious boat but I don’t think there’s enough power. Could be an idea for the future thanks mate

@@DktheWelder it should able to, if you made the shaft go straight to the impeller like in this video kzfaq.info/get/bejne/eM1_qaSC27SXY6c.html

I have heard of that it is difficult to print with and I think you need a steel nozzle

@@DktheWelder it do not specifically have to be steel, but it have to be a harder nozzle then brass because like many other filaments added CF is abrasive to brass nozzles. The 100% infill can also aid with regular pla.

The inlet was really difficult for me I tried sweeping it and heaps of other ways but ended up with using the loft as you say , which you can move points around to change the shape. I might make a better way off using a thrust bearing I have a few ideas I’m hoping someone will figure out the flaws so I can improve it. The flow corrector works really well I think you would need a pretty bad printer for it not too work. On the intake what way would you use to get it to like curve in a bit better?

@@DktheWelder I just made a short video of how I draw jet inlets in cad (fusion360): kzfaq.info/get/bejne/bbJ9p8qIzsmZmGQ.html

I would like to try petg but like PLA because it is cheap and strong , also a lot of what I am doing is in the testing phase still

@@DktheWelder absolutely, pla great for testing. Just wouldn't use it for longevity on this

Glue stick works for me and also my printer is in a box. Another way is printing on a raft helps , I usually print with a brim . There are a lot of people that are very knowledgeable that have commented on some of my videos , I’m sure if you comment they will give you advice. I actually got lucky with my printer worked well straight out of the box👍

@@DktheWelder thanks for these suggestions. I'm gonna play with it today. I want to make a small catamaran and put one of these in each side, but I got a long way to go. I appreciate you. Have a fantastic day

@@michaelosmon sounds like your bed isnt level, i was having a hell of a time sith adhesion. make sure your bed is level and the rollers are tight under the heat bed

Yes there is a free steering unit on the same CG trader site 👍

@@DktheWelder awesome! Thank you for letting me know. I was thinking to scale it down by 50% for an RC boat but i am also putting on onto my kayak

Yes I think so would need to run the 8x5x16 bearings would be better

I haven’t seen those motors I will check them out

@sourand jaded yea ita a shame. I'm pretty sure the military is doing the same thing with the liquid x rotary. Even the icon home 3d printer is completely unavailable for civilians atm

Yeah also with two you could use them to steer.

I can’t see why it wouldn’t the impeller to the flow corrector is the only real tight part but you can just sand it. There might still be a free file pack on the Facebook page my wife is sending them off

Those might be too coarse for making hydrodynamic parts. 0.4mm leaves a relatively smooth surface

@@awellner3285 I agree the smoother the more efficient, and I just leave it overnight for the longer print’s

@@DktheWelder true but let's say you don't know what size jet nozzle you want.you can print 4 in the time it would take 1 find the size you want then print that size how ever fine you want

@@stickypaddle6432 yes I ended up printing multiple of each part trying to get it right and with a days wait between each design is pretty annoying , maybe a bigger nozzle could be the go for figuring out the best option

@@DktheWelder bingo

$3 for the drawing

A motor like 56113 brushless motor would be good , but a kayak still won’t go fast as they aren’t a planning hull

Jet pumps are inefficient, a prop is best for efficiency. Sounds like an awesome project, will it be solar powered?

@DktheWelder yes it will be solar powered, I want to use a mix of drive systems as this boat is being planned as a systems tester for future designs, the jet drives get a good speed for the electricity they use, so could the design be scaled up?

@@tomleake8227 you could scale up the design but to go 40 knots you would need like 500+ hp on a boat that size . It would be really expensive to get an electric motor and batteries that much power

adjust the scale down to a smaller size

There are a few others on thingiverse that are smaller , you could scale it down I guess but then finding the bearings etc might be difficult unless you scale it the correct amount

You could possibly just scale these plans up to get to 80mm??

Could maybe do a 100mm intake be pushing the limits of my printer would probably have to draw it different

I am just selling the files to 3d print for $3 on CG Trader

@@DktheWelder I'll just have to wait till you get more famouser! haha Anyone else out there in NZwanna take my money?? :) This is a real cool idea but I have no way of printing it....

The 10 free one’s finished months ago , but the model is on CG trader for like $3 link in video description. I am putting 2 of them in a little electric jet boat should be fun

@@DktheWelder thats wicked dude hope to see the build on your channel! What's the rough measurements of that intake piece?

I have made them for it put want to do a proper test before posting the drawings, so should be next month some time

@@DktheWelder Okay, cuz your jet seems powerful with its propeller so i would use it in my project if there was a steering head and maybe a reverse bucket. So i'm waiting patiently for those parts to be posted 😸😸 Thank you very much, i've been searching for a good jet engine model since 3 or 4 months and now, I found yours 😄😄

Not really, a longtail motor would be better, also jet units aren’t very efficient I’m not sure how you would fit it to an inflatable kayak

It only costs about $4 in plastic to print and you can get the same printer I have for about $200 . I like the idea of making a turning thruster and reverse bucket for it maybe I will draw and print one ! Hope you can find someone to print one for you I am in New Zealand where are you ?

@@DktheWelder I am in Texas, but I am willing to pay you to make me one if you ever have the time. I can come up with some money if you would let me make it in payments and send after paid off. I would be so great-full. I would like to put it on this little shallow running skiff I am working on now. Any send pics of it. It going to hv a somewhat hull design of a hydraplane racing boat powered by a 86lb thrust trolling motor. And if you can do the reverse cup and turning joints I would pay you extra for those. I can send you my address attached to this text and no o r can see it I believe. Just thought I would offer the money. Been researching the printer thing, and one needs to be educated in CAD, hv a good laptop or computer abd several other things need to know plus knowing how to do everything on the computer and I don’t know how to do that on a computer. Your gifted and talented in that field by what you hv already done. My 21’ center console boat and just about all my fishing gear was stolen right off my truck SA I g Monet now for another one but needed something g to just get me to my fishing spots like across ship Chanel’s drop offs etc. so I’m building a catamaran style small skiff type boat. The kayak I wanted rigged out was gonna run around 6,000.00. So figured I can build something for less than 400.00. And give it away to someone down here in the coast that can’t afford a boat or in hard times when I get another boat next year, kind of giving back, I’m a firm believer in that. Everything comes back to you 10 fold. Well thanks buddy, ever in Texas ya got a free stay and free food and we’ll go fishing. Thanks Steve Quate Keller, TX 76248

An ender 3

One of them is 60mm impeller the free one has a 100mm impeller. I use cura as the slicer which is free the files will work on there

@@DktheWelder good morning. Thanks. Sorry, I don't understand "cura". My english is bad. What the software used? Thanks so much

I just printed them as a place holder until the bearings arrived

You can 3d print it , if you don’t have one I’m sure someone near you could print it

It is in the description, the link doesn’t seem to work in the comments. Or search dkthewelder on CG trader

The problem with the four stroke motor is the rpm isn’t high enough , you can get around this by using a steeper pitch impeller which I think I have on that CG trader file. I think one would work since you are light are you making a board or boat? Also I have just printed a steering nozzle and reverse bucket for it now I will start testing soon.

Oh cool This is the right Nazar up soon up I’m hoping to make a boat so should I find a 2 stroke then?

Hey if I up scale it to 200% would I get more power out of one?

@@theironman_man291 I've been thinking about that too. I'd like to know that too.

@@kiran-by4qz I almost did it but it was going to take 2 days for half of the jet so I didn’t lol

There will be too much money in shipping, in New Zealand we are a long way from the rest of the world. You could ask around on Facebook or something for someone to print it for you locally. I will think about printing and selling it myself but I want to keep it cheap it would end up being expensive

Buyer pays shipping fees and as its reasonable I'd still buy it if it was on ebay for sale

What’s a replicator?

@@DktheWelder a 3d printer of the 23rd century we have had since the 1960's. A 3d printer is to a replicator like a bicycle to a Warp drive ship. It is training wheels for general public to open your mind to its abilities.

@@richbaumann2999 is this legit or a Star Trek thing??

@@davidstonecreation think about it. Why would you have 3d printer if not a soft disclosure to replicators, I mean Medbeds have just arrived on Munich Germany. I can't figure out how to show you pictures and article, but I have them.

@@davidstonecreation the article I have is on BILD Magazine, looks like May 14th brain tumor removed in 30 min. Cabal and minions will try to squash this.